Dad of 4 here:

If your wife breast feeds, I highly recommend cosleeping the first 3-6 months out of pure convenience. Many doctors freak out about cosleeping and many betas whine about it as tho the kid will be in your bed forever, but as newborns need to wake up and feed every hour or two, with luck your wife will be able to breast feed in her sleep before too long. If the baby is a screamer, ear plugs will take care of that pretty nicely.

Also, hold and rock that baby every chance you get while it's still tiny and sleeps all the time. The time goes by so quick and they'll start to sleep less and get big fast, so cherish this precious early stage!!

It's tough to give great advice because every dad is different and every baby is different, but for me cosleeping was the way I could get enough sleep to function and it really goes by quick. Congrats and enjoy the little one!